A number when divided by 247 leaves a remainder 91. What will be the remainder if the number is divided by 19?
Conventional Solution: -Let the number be N
N = 247K + 91
247 is divisible by 19.
If N is divide by 19. Remainder will be 91 – 76 = 15.
Alternate solution :
247 is divisible by 19. The first number , N would be 247+91 = 338. 338 when divided by 19 gives remainder 15.